ProjectDemo: add branch toolbar to drawing xib

git-svn-id: svn://svn.gna.org/svn/etoile/trunk/Etoile/Frameworks/CoreObject@9862 7b3f36aa-e6db-49c1-8b4c-66eac1997e64
Removed isDirectory: argument that doesn't matter. -[NSURL fileURLWithPath:isDirectory:] is not supported on GNUstep.

git-svn-id: svn://svn.gna.org/svn/etoile/trunk/Etoile/Frameworks/CoreObject@9863 7b3f36aa-e6db-49c1-8b4c-66eac1997e64